EP3105771B1 - Thermischer überstromschutzschalter - Google Patents

Thermischer überstromschutzschalter Download PDF

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Publication number
EP3105771B1
EP3105771B1 EP15701468.9A EP15701468A EP3105771B1 EP 3105771 B1 EP3105771 B1 EP 3105771B1 EP 15701468 A EP15701468 A EP 15701468A EP 3105771 B1 EP3105771 B1 EP 3105771B1
Authority
EP
European Patent Office
Prior art keywords
spring
attachment
chamber
circuit breaker
limb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15701468.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3105771A1 (de
Inventor
Erich Fischer
Wolfgang Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ellenberger and Poensgen GmbH
Original Assignee
Ellenberger and Poensgen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ellenberger and Poensgen GmbH filed Critical Ellenberger and Poensgen GmbH
Priority to PL15701468T priority Critical patent/PL3105771T3/pl
Publication of EP3105771A1 publication Critical patent/EP3105771A1/de
Application granted granted Critical
Publication of EP3105771B1 publication Critical patent/EP3105771B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/48275—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end with an opening in the housing for insertion of a release tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/26—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by tumbler
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/4833—Sliding arrangements, e.g. sliding button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details
    • H01R4/4842—Spring housing details the spring housing being provided with a single opening for insertion of a spring-activating tool
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4846—Busbar details

Definitions

  • the invention relates to a thermal overcurrent circuit breaker with a switch housing, in which a thermal expansion element, in particular a bimetal, and a coupled thereto, manually operable snap-action mechanism and a cooperating with this Bewegcard and a fixed contact are arranged, which is connected to a first connection rail while the moving contact via the thermal expansion element is contacted with a second connecting rail.
  • the trip time depends on the amount of overcurrent.
  • an expansion element in particular a bimetal
  • the thermal expansion element is coupled to a manual release mechanism that can be actuated, for example, for release release, which interacts with a moving contact of a contact pair.
  • a manual release mechanism that can be actuated, for example, for release release, which interacts with a moving contact of a contact pair.
  • overcurrent protection circuit breaker with thermal tripping is usually used to protect consumers such as electric motors, household and office machines, electrical tools, power supplies and low-voltage lines against overcurrent.
  • Such circuit breakers can be single-pole, double-pole or three-pole and are used for nominal voltages of AC (alternating current) 240V or DC (direct current) 50V at rated currents in the range between 0.1A and 20A.
  • a thermal overcurrent circuit breaker of the type mentioned is for example from the DE 27 21 162 A1 and from the DE 94 22 029 U1 known.
  • the connection of cables is made via flat connector sockets or by means of cable lugs that can be screwed with the flat connectors.
  • each spring element has a first spring leg and a second spring leg extending at an angle thereto.
  • In the respective connection chamber opens a second housing opening, which is covered by the second spring leg of the spring element in its abutment position and is provided for pivoting operation of this spring leg.
  • the switch housing also preferably comprises a contact chamber extending between an operating side for a manually operable switching element and the connection chambers, in which the snap-action mechanism and the thermal expansion element and the contact pair of moving and fixed contact are arranged.
  • the first spring leg is supported on a first rail or connecting leg of the connecting rail from contacting.
  • the angle between the two spring legs of the spring element is preferably greater than 45 °, more preferably greater than 60 °, and less than 180 °, in particular less than or equal to 90 °.
  • the second spring leg is within the connection chamber a preferably both the second housing opening and the first housing opening at least partially overlapping bearing position on a chamber contour against the spring force in a direction of the first spring leg pivot position for KlemmMID réelle guided in the connection chamber terminal conductor can be brought.
  • a particularly advantageous embodiment of the or each spring element provides that the two spring legs are connected via an intermediate leg, with which the spring element bears against a housing contour within the connection chamber.
  • the intermediate leg is suitably shaped in the manner of an open loop.
  • the adapted to the loop shape housing contour within the respective connection chamber preferably extends on both sides of the intermediate leg to form a contact contour for the Schiingenau type the spring element and a support contour, which is enclosed by the spring legs towards opening loop-shaped intermediate leg.
  • a further embodiment provides U-shaped connecting rails which abuts against a chamber wall of the connection chamber with both U-connection legs or with at least one of the two U-connection legs and the center leg connecting them.
  • a connected connection line opens into the or each connection chamber parallel to the first housing opening a second housing opening, which is also covered by the second spring leg in its abutment position.
  • a second housing opening which is also covered by the second spring leg in its abutment position.
  • an actuating sleeve for indirect pivoting of the second spring leg by means of a tool is arranged in the second housing opening, so that the Klemmutton ist particularly simple, reliable and non-destructive solved and pulled the connecting cable.
  • FIGS. 1 to 3 show a thermal overload protection switch 1 with a switch housing 2, in the embodiment, three connection chambers 3, 4, 5 are arranged side by side.
  • a two-legged spring element 6 is arranged in each connection chamber 3, 4, 5 .
  • a connecting rail 7 is further arranged, which is in each case U-shaped.
  • the U-shape of the respective connection rail 7 is characterized by a in the in FIG. 1 characterized housing longitudinal direction 8 extending first rail leg 7a and a spaced therefrom, parallel rail leg 7b and a connecting center leg 7c formed. With these rail legs 7a to 7c, the respective connecting rails 7 abut against chamber outer walls 9 or chamber intermediate walls 10.
  • the similar rail legs of the connecting rails 7 in the other two connection chambers 4 and 5 are not designated in any more detail.
  • connection chambers 3 to 5 sit the same, two-legged spring elements 6, which are again referred to with regard to the following details for reasons of clarity alike or not individually.
  • first spring leg 6a which is also referred to below as a contact leg
  • the respective spring element 6 is on the rail leg 7a of the corresponding terminal rail 7 contacting.
  • the second spring leg 6b of the respective spring element 6, which is also referred to below as the clamping leg, is oriented in the housing transverse direction 11 perpendicular to the housing longitudinal direction 8 and covers a first housing opening 12.
  • the respective clamping leg 6b of the spring element 6 also covers a second housing opening 13 parallel to the first housing opening 12 mentioned ( Fig. 2 ).
  • connection chamber 3 and 4 In this sits a one-sided closed actuating sleeve 14, which protrudes into the end of the respective connection chamber 3, 4, 5 and abuts there against the clamping leg 6b of the respective spring element 6. Also for reasons of clarity, the similar second housing openings of the other connection chambers 3 and 4 are in turn not specified.
  • the respective actuating sleeve 14 is at least slightly displaceable in the associated housing opening 13 in the housing longitudinal direction 8.
  • An integrally formed locking lug 15 undercuts in the assembled state of the actuating sleeve 14 an edge contour 16 of the respective housing opening 13 within the corresponding connection chamber 3, 4, 5.
  • the actuating sleeve 14, at the opposite insertion end for a tool a support contour 17 (FIG. Fig. 2 ), secured within the corresponding housing opening 13.
  • connection line 18 As is illustrated in the figures with reference to the connection chamber 5 there on the right, by means of the spring elements 6, a terminal contacting of a connection line 18 inserted into the connection chamber 3, 4, 5 via the first housing opening 12 with the respective connection rail 7 and there with its respective second rail leg 7b.
  • the terminal contact is self-locking.
  • in the insertion direction of the respective clamping leg 6b by means of the connecting line 18 and its stripped conductor end 19 in the housing longitudinal direction 8 and thereby in the direction of the contact leg 6a while reducing the existing between these spring legs 6a and 6b angle ⁇ ( Fig. 3 ) are pivoted resiliently.
  • a tensile load on the respective connecting line 18 in the opposite direction of insertion causes an increase in the clamping effect with increasing tensile force.
  • the spring element 6 is mounted in exact position in the respective connection chamber 3, 4, 5.
  • a contact contour 20 and a support contour 21 are formed, between which the intermediate leg 6c of the spring element 6 is seated ,
  • the switch housing 2 is a multi-part. It has a housing base 2a and a housing cap 2b and two housing cover 2c. In the housing base 2a are the connection chambers 3 to 5, in which the housing openings introduced into a housing base 2d 12, 13 open. Out Fig. 2 it can be seen that the overcurrent protection switch 1 2-pole executed, so that the connection chambers 3 to 5 and the therein opening housing openings 12, 13 and the connecting rails 7 and spring elements 6 are correspondingly multiple.
  • a contact chamber 22 Seen in the housing longitudinal direction 8 between the connection chambers 3 to 5 and an operating side 2e of the switch housing 2 is a contact chamber 22 (FIG. Fig. 3 ), in which a snap-action mechanism is arranged, which cooperates with a switching rocker 23 on the operating side 2 e.
  • the housing cap 2b covers the housing base body 2a in the area of the contact chamber 22.
  • the switching rocker 23 protrudes at least partially out of the switch housing 2 via a cap opening 24 of the housing cap 2b in order to be able to be manually operated for the purpose of a free release.
  • the two housing cover 2c are preferably latched to the housing base 2a and cover the both sides of the housing base 2a provided in these connection chambers 3 to 5 from.
  • the snap-action mechanism comprises a latching lever 25, which is coupled to the switching rocker 23 and interacts with a contact spring 26 which carries a moving contact 27 on the free end side. This opposite is a fixed contact 28 which forms a contact pair with the moving contact 27.
  • a release lever 29 With the Verklinkungshebel 25 is a release lever 29 is coupled, which in turn cooperates with a thermal expansion element 30 in the form of a U-shaped bimetal.
  • the bimetal 30 is connected via the two U-legs of the two connecting rails 7 in the connection chambers 3 and 4.
  • the connecting rail 7 of the connecting chamber 3 is in turn connected to the contact spring 26 and via this with the moving contact 27 electrically conductive.
  • connection configuration ensures that when designed between a current / voltage source and a load (consumer) designed overcurrent protection switch 1, the load current always flows through the bimetal 30 so that it in the overload case, d. H. as a result of an overcurrent can cause the thermal tripping.
  • the bimetal 30 optionally actuates the tripping lever 29 as a result of its deflection, so that its latching with the latching lever 25 can be opened and the contact spring held by it in the contact position of the contact pair 27, 28 can pivot as a result of its spring restoring force, so that the contact between the Moving contact 27 and the fixed contact 28 opens.
  • a contact opening can also be done manually by means of the rocker switch 23, in which this pivots in the OFF position and thereby the latching lever 25 is manually unlatched.
  • the thermal overcurrent circuit breaker 1 is designed for DC and AC voltages in the low voltage range (250V AC and 50V DC or 65V DC) at rated currents between 0.05A and 20A and in particular for the protection of electrical machinery, wiring systems of vehicles, transformers and low voltage cables provided.
  • connecting lines 18 can be clamped with a conductor cross section in the range between 0.14mm 2 and 4mm 2 , whereby not only rigid, but also uncompressed and compressed flexible connection conductors can be used with or without core sleeve and with or without plastic sleeve.

Landscapes

  • Breakers (AREA)
  • Thermally Actuated Switches (AREA)
EP15701468.9A 2014-02-13 2015-01-15 Thermischer überstromschutzschalter Active EP3105771B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15701468T PL3105771T3 (pl) 2014-02-13 2015-01-15 Termiczny wyłącznik ochrony nadmiarowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014002026 2014-02-13
PCT/EP2015/000060 WO2015120951A1 (de) 2014-02-13 2015-01-15 Thermischer überstromschutzschalter

Publications (2)

Publication Number Publication Date
EP3105771A1 EP3105771A1 (de) 2016-12-21
EP3105771B1 true EP3105771B1 (de) 2018-10-03

Family

ID=52432774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15701468.9A Active EP3105771B1 (de) 2014-02-13 2015-01-15 Thermischer überstromschutzschalter

Country Status (10)

Country Link
US (1) US10348000B2 (ja)
EP (1) EP3105771B1 (ja)
JP (1) JP6348982B2 (ja)
CN (1) CN105993059A (ja)
CA (1) CA2939551C (ja)
ES (1) ES2703202T3 (ja)
PL (1) PL3105771T3 (ja)
SG (1) SG11201606674QA (ja)
TR (1) TR201815239T4 (ja)
WO (1) WO2015120951A1 (ja)

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US10014595B2 (en) * 2015-12-01 2018-07-03 Alexander Paolozzi Connector assembly for an electrical device
US10014643B2 (en) * 2015-12-01 2018-07-03 Alexander Paolozzi Bus bar including a wiring connector assembly
CN108063061A (zh) * 2016-11-08 2018-05-22 进联电子科技(上海)有限公司 开关接线装置的模块化结构
CN106710966B (zh) * 2017-02-24 2019-07-26 德力西电气有限公司 一种控制回路的接线结构及接触器
DE202018101472U1 (de) 2017-07-17 2018-10-24 Electro Terminal GmbH & Co. KG Leuchtenanschlussklemme mit integrierter Elektronik
DE102018215879B4 (de) * 2018-09-18 2021-06-24 Bayerische Motoren Werke Aktiengesellschaft Steckverbindung mit Redundanz sowie Fahrzeug mit einer solchen
USD938369S1 (en) * 2019-10-21 2021-12-14 Ellenberger & Poensgen Gmbh Combined electrical switch with mounting plate

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GB2478005B (en) * 2010-02-23 2017-06-14 Univ Court Univ Of Edinburgh Enhanced spatial modulation
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Also Published As

Publication number Publication date
EP3105771A1 (de) 2016-12-21
JP6348982B2 (ja) 2018-06-27
WO2015120951A1 (de) 2015-08-20
CA2939551A1 (en) 2015-08-20
ES2703202T3 (es) 2019-03-07
CN105993059A (zh) 2016-10-05
US10348000B2 (en) 2019-07-09
US20160352026A1 (en) 2016-12-01
CA2939551C (en) 2021-06-08
JP2017506417A (ja) 2017-03-02
TR201815239T4 (tr) 2018-11-21
PL3105771T3 (pl) 2019-03-29
SG11201606674QA (en) 2016-09-29

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